Flexible mounting for instruments and other apparatus



'v. A. TRIER Feb. 1, 1944.

FLEXIBLE MOUNTING FOR INSTRUMENTS AND OTHER APPARATUS F d Nov. 27, 1942Inventor 7 14/1. fi/E/ x By A ttorneys together i'ace (piece.

1 Patented Feb. 1, 1944 UNITED STATES vr'rsu'r Price I FLEXIBLEmoigggtmmvrs' I Vernon Anthony Trier, London, England, assignor toSilentbloo Limited, London, England, a

company oi Great Application Novem 2'1, 1M2, Serial No. 467,154 In GreatBEE i i a: 12, 1942 to protect the mounting and the apparatus-itsupports it it is deflected beyond a predetermined extent.

According to this invention the outer circunrferential edge or rim ofthe flexible annulus is provided with projecting portions which extendthrough slots formed in one or both faces of the housing in which therim is mounted. These projections, which are integral with the thickenedrubber rim, thus form buffers which come into operation it the mountingis deflected as a result of shock, vibration or impact, above its normalloading capacity. The buflers may proiect to an equal extent in theaxial direction from each face of the housing and they may be equallyspaced apart from one another so as to provide an adequate cushioningsurface without weakening the metal or other housing in which the rim ismounted.

A flexible mounting constructed in accordance with this invention isillustrated by way of example in the accompanying drawing, in whichFigure 1 is a side elevation partly in section, and

Figure 2 is a plan of the mounting alone.

In the construction shown the mounting comprises a rubber or likeflexible annulus A having an enlarged central boss A and a thickenedcircumierential rim A. The boss 4& supports a metal bush C adapted toreceive a bolt Bby .which the mounting can besecured to a support 3.

The thickened rim A" of the annulus is engaged by a housing Tiormed fromtwo similar metal plates D which are substantially rectan ular in planand each provided with a central aperture D surrounded by a flangedportion D adapted to accommodate onevhalf of the thickened rim A whenthe two plates are connected At intervals around theiianged portion D ofthe housing slots are formed and through these extend in an axialdirection projections. A formed on the opposite edges of the rim A andintegral therewith. The projections A consti tute bufiers and areconveniently spaced apart equally from one another around the rim. Thesebufiers form cushions which comeinto operation if the mounting isdeflected as a result of shock, vibration or impact above its,normalcapacity. The corners of the rectangular housing are provided withperforations D through which rivets or the like can be passed to securethe housingto a plate or other instrument-carrying member E, and ifexcesssive deflection of the mounting occurs, the bufiers A will comeinto contact with the support B or with an abutment-such as' thatindicated at F in Figure 1in the opposite direction. Thus the metalhousing itself is prevented from coming into contact with a support oneither side of the annulus by means of the .bufiers A so that theinstruments which be mounted on the board or plate E are protected fromshock.

The buflers A need not project to an equal extent in the axial directionon each side oi the annulus and in some cases they only operate in onedirection. The projections A however, in addition form an improvedanchora e between the rim A and its metal housing D and an improvedmounting is provided without increasing the number of parts orcomplicating the assembly in any way.

v The two plates D from which the housing is made can be secured by spotwelding or in any other convenient manner and inits unstressed state theportion of the annulus between the central boss and the rim may be ofshallow irusto-conical form as shown or of any other convenient shapewithout departing from the invention.

What I claim as my invention and desire to secure by Letters Patent is:

A flexible mounting comprising a flexible annulus, an inner memberengaged by the bore of said annulus, an outer member constituting ahousing forv the outer circumferential rim of the annulus, andprojections extending through slots, Y

extent. YERNON ANTHONY TREE.

